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Try www.packetstormsecurity.org they have a pretty comprehensive database full of these tools. They even have explainations on there capabilities on most.

The ones that were mentioned above are all great tools, and yes...sometimes brute forcing takes time, if it didnt take anytime it would be the equivlent of asking yourseklf, why set a password...lol

Recommendation: If you are going to password protect your files, store a master password list in a safe place, such as a safe or safe deposit box..(not on your system)...that way you woulnt have to waste countles hours in the futre trying to recover the files that you shoult nativly have access too. I am assuming you own these files that you are trying to crack...if not thats a whole oterh dicussion :-)

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I am partial to Elcomsoft products as they have never dissapointed me: http://www.elcomsoft.com/archpr.html Advanced archive password recovery. I love it, it works well, and is well worth the money if you have users that do this often... as we do...
-rich